Projection method with real object projector

ABSTRACT

A projection method using a real object projector is disclosed. The real object projector comprises a base, a control circuit installed in the base, and an image receiving apparatus installed on the base. The base is combined with a light source module, and between the light source module and the base is a different movable connection relationships according to different designs. The light source module can have a transparent film clip with an identifying mark, and different transparent film clips have different marks. When projecting with the real object projector the steps are, firstly moving the image receiving apparatus to a suitable position according to the mark on the transparent film clip, then focusing the image receiving apparatus according to the transparent film clip, and finally pressing an image receiving key to automatically identify the kind of transparent film clip and magnify the projection image with the control circuit. The real object projector has a design with a movable light source module, and is flexible and convenient. The projection method can suitably magnify the image according to the kind of transparent film, and adjust for maximum magnifying power.

BACKGROUND OF INVENTION

1. Field of the Invention

The invention relates to a projection method with a real objectprojector, and more particularly, to a projection method which suitablymagnifies a projected image of a transparent film according to thetransparent film type.

2. Description of the Prior Art

Projectors or projection tools are commonly used for displaying visualaids during presentations or conferences

FIG. 1 shows a conventional projector. An image apparatus 12 isinstalled on a base 10, and the image apparatus 12 includes an arm 14and a lens 16. When projecting an object 18, the object 18 is placedunder the lens 16, and the lens 16 focuses on the object 18. A user canadjust the magnification of the image and adjust the focus with the lens16 according to his requirements.

However, when a user needs to project a transparent film, the projectorfails to project the transparent film, since a bottom light source isneeded. An extra light source module 20 is required for the projector toproject the transparent film 22, as FIG. 2 shows. Lacking a light sourcemodule 20 prevents the projection of the transparent film 22.

The method of projecting a transparent film is by placing thetransparent film 22 on top of the light source module 20, and under thelens 16 and focusing the lens 16 on the transparent film 22. Then theuser adjusts the projected image size and focus according to the size ofthe transparent film. When there is more than one size of transparentfilm 22, users need to continuously adjust the projected image size andfocus according to the different transparent films 22. This isinconvenient and results in a poor quality of presentation.

Therefore, there is need for an improved projection method with a realobject projector to project kinds of transparent films.

SUMMARY OF INVENTION

It is therefore an objective of the present invention to provide aprojection method using a real object projector to solve theabove-mentioned problems. A light source module is installed on a baseof the real object projector to project a transparent film. Theprojection method can optimally magnify images in accordance withvarious sizes of transparent films.

According to the claimed invention, A projection method of a real objectprojector which comprises a light source module that further includes atransparent film clip having a mark, a control circuit and an imagereceiving apparatus comprise steps of: automatically or manually movingthe image receiving apparatus to a suitable position in accordance withthe mark on the transparent film clip; then automatically or manuallyfocusing the image receiving apparatus according to the transparent filmclip; and pressing an image receiving key to magnify the projected imagevia a control circuit; or automatically identifying the kind or type oftransparent film and magnifying the projected image.

These and other objectives of the present invention will no doubt becomeobvious to those of ordinary skill in the art after reading thefollowing detailed description of the preferred embodiments that areillustrated in the various figures and drawings.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram of a projector according to the prior art;

FIG. 2 is a diagram of projecting a transparent film using a projectoraccording to prior art;

FIG. 3 is a diagram illustrating projecting a real object using a realobject projector according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating projecting a transparent film using areal object projector according to an embodiment of the presentinvention;

FIG. 5 and FIG. 6 are diagrams of a real object projector according toembodiments of the present invention;

FIG. 7 is a diagram of a transparent film clip according to anembodiment of the present invention;

FIG. 8 is a flow chart illustrating using a real object projector toproject a transparent film according to an embodiment of the presentinvention;

FIG. 9, FIG. 11 and FIG. 12 are flow charts illustrating using a realobject projector according to embodiments of the present invention; and

FIG. 10 is a diagram illustrating using a real object projector toproject a transparent film according to an embodiment of the presentinvention.

DETAILED DESCRIPTION

FIG. 3 and FIG. 4 are diagrams illustrating a real object projectorwhich can carry out a projection method according to the presentinvention. The real object projector comprises a base 30 in which acontrol circuit 54 is installed for receiving and transferring the imagedata, and identifying and magnifying it. An image receiving apparatus 32is connected to the base 30. The image receiving apparatus 32 comprisesan arm 34 connected to the base 30 and a lens module 36 installed on thearm 34. The arm 34 can be rotated in a limited angle or range with afulcrum connecting the arm 34 and the base 30. The lens module 36 isused to capture an image. A light source module 38 is connected to thebase 30 by an axle 40. The light source module 38 can be rotated in alimited angle with the axle 40 acting as a fulcrum. A damper can befurther installed on the axle 40 for buffering the rotation of the lightsource module 38. Furthermore, the rotation of the light source module38 can be operated manually or automatically with a combination of amotor, a gear wheel, a rack, a belt and so on. Further, as FIG. 5 andFIG. 6 show, the light source module 38 can be designed to be stored inthe base 30 and be taken out from the base 30 by pulling or rotating.The pull or rotation operation can be manually operated or automaticallyoperated by a combination of a motor, a gear wheel, a rack, a belt andso on.

Referring to the FIG. 4 and FIG. 7, a transparent film 42 can be placedon the light source module 38 for projection, and can be installed in atransparent film clip 44 having a mark 46 and then be placed on thelight source module 38 for projection. The transparent film clip 44 isvariously installed in accordance with transparent films 42 of differentsizes, and the marks 46 on different transparent film clips 44 areunique. The mark 46 is a positioning or locating mark and is also anidentification mark for identifying the transparent film 42. The mark 46can be at least one transparent opening, and the opening of each of thetransparent film clip 44 has a different shape and number.

FIG. 8 shows an embodiment of the present invention using the realobject projector. Firstly, in step S10, the image receiving apparatus ismanually or automatically moved to a suitable position in accordancewith the mark. In step S12, the image receiving apparatus is manually orautomatically focused corresponding to the transparent film clip. Instep S14, pressing the image receiving key 52 located on base 30 of thereal object projector. Finally, in step S16, digitally magnifying theprojection image of the transparent film with the control circuitcorresponding to the type of transparent film clip. In above-mentionedstep S14, the image receiving key 52 is selected from an image receivingkey which assigns the size of the transparent film and an imagereceiving key which does not assign the size of the transparent film. Ifthe image receiving key is selected from the later, between steps S14and S16, the control circuit will automatically identify kinds oftransparent film according to the mark on the transparent film clip.Step S14 can be further arranged before step S10, and the method isperformed in the sequence of S14, S10, S12, and S16. This means pressingthe image receiving key and automatically moving the image receivingapparatus to a suitable position, then automatically focusing andidentifying the transparent film, and automatically magnifying theprojection image or projected image of the transparent film. Step S12can be further arranged after step S16, and the method is performed inthe sequence of S10, S14, S16, and S12. This means manually moving theimage receiving apparatus to a suitable position and pressing the imagereceiving key which assigns the size of the image, and automaticallymagnifying and manually focusing the projection image or projected imageof the transparent film. Furthermore, the sequence of steps S12 and S14can be exchanged, and the method is performed in the sequence of S10,S14, S12, and S16. This means manually moving the image receivingapparatus to a suitable position and pressing the image receiving key,then automatically focusing and identifying the kind of transparentfilm, and automatically magnifying the projection image of thetransparent film.

Referring to FIG. 9, which is a diagram illustrating an embodiment ofthe projection method according to present invention. In step S20, theimage receiving apparatus is manually moved to a suitable position inaccordance with the mark on the transparent film clip. In step S22,automatically focusing the image receiving apparatus. Finally, in stepsS24 and S26, automatically identifying the kind of transparent film anddigitally magnifying the projection image of the transparent film withthe control circuit.

FIG. 10 is a diagram illustrating an embodiment of the projection methodaccording to present invention. In this method, utilizing a change ofdistance u of the image receiving apparatus 32 and the transparent film42 to magnifying the received image. Referring to FIG. 11, in step S30,firstly pressing the image receiving key located on the real objectprojector or on a computer which is connected to the real objectprojector. In step S32, automatically moving the image receivingapparatus to a suitable distance for maximizing an image. Finally, instep S34, manually or automatically focusing the image receivingapparatus according to the transparent film clip. In the above-mentionedstep S30, the image receiving key is selected from an image receivingkey which assigns the size of the transparent film and an imagereceiving key which does not assign the size of the transparent film. Ifthe image receiving key is selected from the later, three steps areadded between steps S30 and S32. The three steps comprise: (a)automatically moving the image receiving apparatus to a suitableposition in accordance with the mark; (b) automatically focusing theimage receiving apparatus; and (c) automatically identifying the type ofthe transparent film clip with the control circuit.

Besides the above-mentioned methods, the projection method according tothe present invention can be further aimed to kinds of transparent film.Moving the image receiving apparatus to a suitable position forobtaining a sufficient magnifying power, and automatically zooming andfocusing the image receiving apparatus to magnify the projected image.Referring to FIG. 12, in step S40, firstly pressing the image receivingkey on the real object projector or a key on a computer which isconnected to the real object projector. In step S42, automaticallymoving the image receiving apparatus to a suitable position inaccordance with the mark on the transparent film clip. In step S44,automatically focusing the image receiving apparatus according to thetransparent film clip. In step S46, automatically identifying the kindor type of transparent film clip with the control circuit. Then in stepS48, automatically moving the image receiving apparatus to a suitableposition for obtaining a sufficient magnifying power depending on thetype of transparent film clip. Finally, in step S50, automaticallyzooming and focusing the image receiving apparatus to magnify aprojection or projected image.

Those skilled in the art will readily observe that numerousmodifications and alterations of the device may be made while retainingthe teachings of the invention. Accordingly, the above disclosure shouldbe construed as limited only by the metes and bounds of the appendedclaims.

1. A projection method of a real object projector, in which an imagereceiving key is used for operating the real object projector to projectan image on a transparent film, the real object projector comprising alight source module, a control circuit disposed in a base and an imagereceiving apparatus, and the light source module further comprises atransparent film clip having a mark, the method comprising steps of: (a)pivotally displacing the light source module from a position overlayingthe base to receive the transparent film thereon; (b) moving the imagereceiving apparatus to a suitable position according to the mark; (c)focusing the image receiving apparatus according to the transparent filmclip; (d) pressing the image receiving key; and (e) digitally magnifyingthe projection image of the transparent film with the control circuitdepending on a type of the transparent film clip.
 2. The projectionmethod of a real object projector of claim 1 wherein the step of movingthe image receiving apparatus to a suitable position according to themark is preceded by the step of encoding the mark in correspondence to asize of the transparent film.
 3. A projection method of a real objectprojector for projecting a transparent film image, the real objectprojector comprising a light source module, a control circuit disposedin a base and an image receiving apparatus, and the light source modulefurther comprises a transparent film clip having a mark, wherein themethod comprises steps of: (a) withdrawing the light source module fromthe base to expose a support for the transparent film and positioningthe transparent film thereon; (b) moving the image receiving apparatusto a suitable position according to the mark; (c) automatically focusingthe image receiving apparatus according to the transparent film clip;(d) automatically identifying a kind of transparent film clip with thecontrol circuit; and (e) digitally magnifying the projection image ofthe transparent film with the control circuit.
 4. A projection method ofa real object projector, in which an image receiving key is used foroperating the real object projector to project a transparent film, thereal object projector comprises a light source module, a control circuitdisposed in a base and an image receiving apparatus, and the lightsource module further comprises a transparent film clip having a mark,wherein the method comprises steps of: (a) withdrawing the light sourcemodule from the base to expose a support for the transparent film andpositioning the transparent film thereon; (b) pressing the imagereceiving key; (c) moving the image receiving apparatus to a suitableposition for maximizing a projection image; and (d) focusing the imagereceiving apparatus according to the transparent film clip.
 5. Aprojection method of a real object projector, in which an imagereceiving key is used for operating the real object projector to projecta transparent film, the real object projector comprising a light sourcemodule, a control circuit disposed in a base and an image receivingapparatus, and the light source module further comprises a transparentfilm clip having a mark, wherein the method comprises steps of: (a)pivotally displacing the light source module from a position overlayingthe base to receive the transparent film thereon; (b) pressing the imagereceiving key; (c) automatically moving the image receiving apparatus toa suitable position in accordance with the mark; (d) automaticallyfocusing the image receiving apparatus corresponding to the transparentfilm clip; (e) automatically identifying kinds of the transparent filmclip with the control circuit; (f) automatically moving the imagereceiving apparatus to a suitable position for obtaining a sufficientmagnifying power corresponding to kinds of the transparent film clip;and (g) automatically zooming and focusing the image receiving apparatusto magnify a projection image.